diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 555fae6..17deb6a 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -3,6 +3,7 @@ master
  - make it possible to set default filter corners via config file (see #66)
  - enable parallel event upload/replacement/deletion on seishub and jane
    (see #67)
+ - fix Qt application Window icon (see #68)
 
 0.5.0
  - add support for magnitude estimation for data fetched from an FDSN server
diff --git a/obspyck/obspyck.py b/obspyck/obspyck.py
index a2b8eb1..7afd157 100755
--- a/obspyck/obspyck.py
+++ b/obspyck/obspyck.py
@@ -62,6 +62,8 @@
 NAMESPACE = "http://erdbeben-in-bayern.de/xmlns/0.1"
 NSMAP = {"edb": NAMESPACE}
 
+ICON_PATH = os.path.join(os.path.dirname(
+    sys.modules[__name__].__file__), 'obspyck{}.gif')
 
 if map(int, obspy.__version__.split('.')[:2]) < [1, 1]:
     msg = "Needing ObsPy version >= 1.1.0 (current version is: {})"
@@ -117,6 +119,15 @@ def __init__(self, clients, streams, options, keys, config):
         self.widgets = Ui_qMainWindow_obsPyck()
         self.widgets.setupUi(self)
 
+        # set icon
+        app_icon = QtGui.QIcon()
+        app_icon.addFile(ICON_PATH.format("_16x16"), QtCore.QSize(16, 16))
+        app_icon.addFile(ICON_PATH.format("_24x42"), QtCore.QSize(24, 24))
+        app_icon.addFile(ICON_PATH.format("_32x32"), QtCore.QSize(32, 32))
+        app_icon.addFile(ICON_PATH.format("_48x48"), QtCore.QSize(48, 48))
+        app_icon.addFile(ICON_PATH.format(""), QtCore.QSize(64, 64))
+        self.setWindowIcon(app_icon)
+
         # Create little color icons in front of the phase type combo box.
         # Needs to be done pretty much at the beginning because some other
         # stuff relies on the phase type being set.
@@ -647,7 +658,13 @@ def on_qToolButton_replaceEvent_clicked(self, *args):
         except:
             user = None
         qMessageBox = QtGui.QMessageBox()
-        qMessageBox.setWindowIcon(QtGui.QIcon(QtGui.QPixmap("obspyck.gif")))
+        app_icon = QtGui.QIcon()
+        app_icon.addFile(ICON_PATH.format("_16x16"), QtCore.QSize(16, 16))
+        app_icon.addFile(ICON_PATH.format("_24x42"), QtCore.QSize(24, 24))
+        app_icon.addFile(ICON_PATH.format("_32x32"), QtCore.QSize(32, 32))
+        app_icon.addFile(ICON_PATH.format("_48x48"), QtCore.QSize(48, 48))
+        app_icon.addFile(ICON_PATH.format(""), QtCore.QSize(64, 64))
+        qMessageBox.setWindowIcon(app_icon)
         qMessageBox.setIcon(QtGui.QMessageBox.Warning)
         qMessageBox.setWindowTitle("Replace?")
         qMessageBox.setText("Overwrite event in database?")
@@ -681,7 +698,13 @@ def on_qToolButton_deleteEvent_clicked(self, *args):
         except:
             user = None
         qMessageBox = QtGui.QMessageBox()
-        qMessageBox.setWindowIcon(QtGui.QIcon(QtGui.QPixmap("obspyck.gif")))
+        app_icon = QtGui.QIcon()
+        app_icon.addFile(ICON_PATH.format("_16x16"), QtCore.QSize(16, 16))
+        app_icon.addFile(ICON_PATH.format("_24x42"), QtCore.QSize(24, 24))
+        app_icon.addFile(ICON_PATH.format("_32x32"), QtCore.QSize(32, 32))
+        app_icon.addFile(ICON_PATH.format("_48x48"), QtCore.QSize(48, 48))
+        app_icon.addFile(ICON_PATH.format(""), QtCore.QSize(64, 64))
+        qMessageBox.setWindowIcon(app_icon)
         qMessageBox.setIcon(QtGui.QMessageBox.Warning)
         qMessageBox.setWindowTitle("Delete?")
         qMessageBox.setText("Delete event from database?")
@@ -4531,7 +4554,13 @@ def checkForSysopEventDuplicates(self, starttime, endtime):
             self.error(err)
             self.error(errlist)
             qMessageBox = QtGui.QMessageBox()
-            qMessageBox.setWindowIcon(QtGui.QIcon(QtGui.QPixmap("obspyck.gif")))
+            app_icon = QtGui.QIcon()
+            app_icon.addFile(ICON_PATH.format("_16x16"), QtCore.QSize(16, 16))
+            app_icon.addFile(ICON_PATH.format("_24x42"), QtCore.QSize(24, 24))
+            app_icon.addFile(ICON_PATH.format("_32x32"), QtCore.QSize(32, 32))
+            app_icon.addFile(ICON_PATH.format("_48x48"), QtCore.QSize(48, 48))
+            app_icon.addFile(ICON_PATH.format(""), QtCore.QSize(64, 64))
+            qMessageBox.setWindowIcon(app_icon)
             qMessageBox.setIcon(QtGui.QMessageBox.Critical)
             qMessageBox.setWindowTitle("Possible Duplicate Public Event!")
             qMessageBox.setText(err)
@@ -4576,7 +4605,13 @@ def popupBadEventError(self, msg):
                " %s." % msg)
         self.error(err)
         qMessageBox = QtGui.QMessageBox()
-        qMessageBox.setWindowIcon(QtGui.QIcon(QtGui.QPixmap("obspyck.gif")))
+        app_icon = QtGui.QIcon()
+        app_icon.addFile(ICON_PATH.format("_16x16"), QtCore.QSize(16, 16))
+        app_icon.addFile(ICON_PATH.format("_24x42"), QtCore.QSize(24, 24))
+        app_icon.addFile(ICON_PATH.format("_32x32"), QtCore.QSize(32, 32))
+        app_icon.addFile(ICON_PATH.format("_48x48"), QtCore.QSize(48, 48))
+        app_icon.addFile(ICON_PATH.format(""), QtCore.QSize(64, 64))
+        qMessageBox.setWindowIcon(app_icon)
         qMessageBox.setIcon(QtGui.QMessageBox.Critical)
         qMessageBox.setWindowTitle("Public Event with Missing Information!")
         qMessageBox.setText(err)
diff --git a/obspyck/obspyck_16x16.gif b/obspyck/obspyck_16x16.gif
new file mode 100644
index 0000000..66d237f
Binary files /dev/null and b/obspyck/obspyck_16x16.gif differ
diff --git a/obspyck/obspyck_24x24.gif b/obspyck/obspyck_24x24.gif
new file mode 100644
index 0000000..258cf2a
Binary files /dev/null and b/obspyck/obspyck_24x24.gif differ
diff --git a/obspyck/obspyck_32x32.gif b/obspyck/obspyck_32x32.gif
new file mode 100644
index 0000000..9a1668b
Binary files /dev/null and b/obspyck/obspyck_32x32.gif differ
diff --git a/obspyck/obspyck_48x48.gif b/obspyck/obspyck_48x48.gif
new file mode 100644
index 0000000..a0efda5
Binary files /dev/null and b/obspyck/obspyck_48x48.gif differ
diff --git a/setup.py b/setup.py
index 0bbbaf1..a5ac3f7 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,8 @@
         ]
     }
 PACKAGE_DATA = {
-    'obspyck': ['example.cfg', 'obspyck.gif']}
+    'obspyck': ['example.cfg', 'obspyck.gif', 'obspyck_16x16.gif',
+                'obspyck_24x24.gif', 'obspyck_32x32.gif', 'obspyck_48x48.gif']}
 
 SETUP_DIRECTORY = os.path.dirname(os.path.abspath(inspect.getfile(
     inspect.currentframe())))